Quick update: If you surf to nokiausa.com and view Chargers and Stands, the list contains the CA-44 where it explicitly mentions that it is compatible with the 770.
I went into a local T-Mobile store the other day and bought a Nokia DC-4 (for model 6101 phone) cigarette lighter cord...charges the 770 perfectly, and it obviously has the newer style mini plug...ran about $25
Also, I bought one of those adapters that converts a cig. lighter cord to a two-prong 110 plug...works perfect with the DC-4, so now I can use the same extra charger in the car and at my office...$3 at the dollar store...
This might be a good solution for some of you...you may be able to find the charger at a Cingular store, also...
I bought the the CA-44: Charger Adaptor with my 770. Put I find that the male plug of the adaptor doesn't stay as good as the the male plug of the ac adaptor charger in the 770. It keeps going away at any move of the 770.
Does any one else have the same problem ?